Republican presidential candidate Chris Christie’s brother Todd Christie, who is part of his campaign, had an account on Ashley Madison that led to a secret affair, In Touch magazine is reporting exclusively.

Todd, who has five children with his current wife, had sex with a woman he met on the hacked cheating site about a dozen times, a source tells In Touch exclusively. His brother Chris has consistently extolled the sanctity of marriage.

Todd is a member of the New Jersey Finance Leadership Team, supporting his brother’s presidential bid. The former Wall street trader is worth at least $60 million and has consistently helped his brother financially in various campaigns.

Chris and Todd Christie. (Photo Credit: Getty Images)

“Todd knows that he‘ll probably lose his family — and that it could cost Chris the Republican nomination,” the insider says.

Unfortunately, this isn't the first time Todd's actions have jeopardized his brother's political future. Chris was on the short list to be Mitt Romney's running mate in the 2012 presidential election, but his brother Todd's problems with the Securities and Exchange Commission helped derail that. Todd settled a civil suit wherein the SEC claimed he was profiting by overcharging his customers.

For more on Todd’s cheating scandal, pick up the latest issue of In Touch Weekly, on newsstands now!